摘要
基于相似理论,推导出渗流冻结试验的相似准则,确定模型试验中关键参数的相似缩比。设计高水压力渗流冻结模型系统,开展了渗流场高水压力作用下渗流冻结模型试验,探究试验过程中温度场和冻结壁的变化规律。研究表明渗流场高水压力对冻结过程中温度场和冻结壁有较大的影响,上游的温度高于下游的温度,上游的破坏程度大于下游的破坏程度,冻结壁呈现出上游薄下游厚的趋势;在进行高水压力渗流之前,冻结壁越薄,冻结壁破坏越明显。
Based on the similarity theory,the similar criteria of seepage freezing test are derived and the similar scaling ratio of key parameters in model experiments is determined.The seepage freezing model system with high wa-ter pressure is designed to investigated the change rule of temperature field and freezing wall.The results show that the high water pressure of seepage field has a great influence on temperature field and freezing wall during freezing process.The upstream temperature is higher than the downstream temperature,and the upstream damage degree is greater than the downstream damage degree.The freezing wall shows a trend of thin upstream and thick downstream.Before conducting high water pressure seepage,the thinner the frozen wall,the more obvious the destruction of the frozen wall.
作者
刘东浩
沐方元
张子婧
吉植强
LIU Donghao;MU Fangyuan;ZHANG Zijing;JI Zhiqiang(School of Civil Engineering,Yantai University,Shandong Yantai 264005,China)
出处
《低温建筑技术》
2023年第5期58-61,共4页
Low Temperature Architecture Technology
基金
国家自然科学基金项目(41771070,42071080)
山东省大学生创新训练项目(S202211066026)。
关键词
渗流
人工冻结
模型试验
高水压力
seepage
artificial freezing
model test
high water pressure
